7.5

CVE-2015-2688: the tor project tor

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2015-2688DEBIAN-CVE-2015-2688
Published 24-01-2020Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-2688 is a high (CVSS 7.5) vulnerability in the tor project tor. EPSS estimates a 2.19% chance of exploitation in the next 30 days, higher than 82% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 1
DLA-178-1DSA-3203-1OPENSUSE-SU-2024:10423-1

Timeline

  1. 24-01-2020
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

buf_pullup in Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle unexpected arrival times of buffers with invalid layouts, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via crafted packets.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.19%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

0.00 pp

From 2.19% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • tor< 0.2.5.11-1
The tor project1 product
  • tor< 0.2.4.26 | 0.2.5.x before 0.2.5.11
Torproject1 product
  • tor< 0.2.4.26 | ≥ 0.2.5.1, < 0.2.5.11
Ubuntu1 product
  • tor< 0.2.4.27-1build0.14.04.1

4 vendors · 4 products

References

5 links